Ignition device for gas burners



Oct. 19, 1937. c. E. METHUDY IGNITION DEVICE FOR GAS BURNERS Filed April '7,' 195o 2 sheets-sheet 1 oa-Q anaaovuoqyeea Oct. 19, 1937. C E, METHUDY 2,096,363

IGNITION DEVICE FOR GAS BURNERS l Filed April '7, 195o 2 sheets-smet 2 :gms

Patented Oct. 19, 1937 UNITED STATES IGNIfrIoN DEVICE Foa GAS commas Carl E. Methudy, St. Louis, Mo., assignor, by mesne assignments, to The Cleveland Trust Company, Ohio Cleveland, Ohio, a corporation of 'Application April 7, 1930, Serial No. 442,073

'l Claims.

Another object of the invention' is to providel I improved means for igniting the gas at the gas outlet openings of a gas burner in a gas stove that is equippedv with a constantly burning pilot light, comprising a connection for conducting gas from the gas manifold of the stovey to the gas burner, and devices for conducting gas from said connection to a communication from the constantly burning pilot light to the gas burner so that the gas passing from the outlet openings of f the gas burner will be ignited automatically and as an incident to the passage of gas through such connections and devices.

Another object of this invention is to provide Mimproved means for'utilizing a constantly burning pilot light seated within a nest of open burners to ignite the gas passing from the gas outlet openings to a burner within an oven and outside of the burner box frame within which the pilot light is situated.

Another object of the invention is to provide a `gas pilot burner of novel construction which will be unaffected to a large extent by currents of air, -i'uel gas, or the gases of combustion, and thus resist the tendency of Such currents to extinguish the flame.

Another object of the invention is to provide novel means for producing a combustible mixture which is adapted to be used as a booster in connection with a continuous burning pilot light for ignitlng the gas passing from outlet openings of gas burners. l

Other objects will appear from the following description taken in connection with the accom- Dnying drawings, in which- Fig. 1 is a plan view oi.' one embodiment of the present invention in a gas stov Fig. 2 is an enlarged4 view similar .to Fig. 1 lbut partly in horizontal section. 5 Fig. 3 is a cross-section on line 3 3, Fig. 2.

Fig. 4 is a plan view of' an alternate construction of connection between the fuel pipe and the ignition tube.

Fig. 5 is an enlarged vertical section through a part of the device including the alternate construction illustrated in Fig. 4. Fig. 6 is a view 'partly in horizontal section showing an alternate construction of connection between the burner and the ignition tube.

Fig. 7 is a section taken on line 1-1, Fig; 6.

The present invention is illustrated as applied to and combined with the gas burner of a gas 5 stove for igniting the gas passing from the gas outlets of the burner by means of the constantly burning pilot light.

As shown, gas manifold I is supported adjacent to the burner box frame 2 ofthe gas stove within 10 which ythere is a cluster of gas burners 3, one of said burners being shown foi; illustrative purposes. The gas burners 3 are supplied with gas from the manifold I through pipes -4 controlled by valves 5, so that the burners 3'may be supplied 15 with gas selectively, as is familiar.

The oven 6 is formed by enclosing walls l. A gas burner 8 is supported within the oven 6 in any desired position, and by any appropriate supporting means with which the present in- 20 vention is not concerned. This burner 8 has through its under side series of gas outlet openings 9, through which the gas passes from the inside of the hollow burner 8 and at which openings the gas is ignited to supply the heat to the 25 oven. 'I'he burner 8 is equipped with an inlet I0 for admitting a mixture of gas and air.

A pipe l I from the manifold I is equipped with a valve I 2 which may be opened and closed like the valve '5, so as to permit gas to pass through 30 the pipe Il or not, as desired. The pipe II opens into a T-tting I3, from one arm of which apipe- Il opens into a vheat. control casing I5. These' heat control devices are of standard and familiar construction and are adjustable, as is well known, 35 to control and regulate the amount of heat. e The present invention is not concerned with th'e heat control device I5, which constitutes a part of the passage for conducting the gas from the manifold I' to the gas burner. From the heat control 40 device I5, a pipe I6 conducts the'gas into the inlet Ill in which the gas is mixed with the air landby which the mixture of air and gasA is conducted into the hollow burner 8. From Within the hollow burner 8, the gas passes through the 45 gas outlets 9, which constitute ignition jets.

The gasstove comprises a -pilot light burner casing I1, which encloses a burner tip or jet I8 which is constantly burning and to which gas is' conducted from the manifold I'through a pipe I9. 50 The pilot light burner casing Il has tubular arms 20 extending toward the respective burners 3 and which receive gas discharged from the gas outlet openings 2| of the burners 3, thereby bringing the gas withinthe pilot light burner casing- I1. 55

Of course, the gas is thereby ignited and iiashes back so as to ignite the gas passing from the gas outlet openings 22 in the burners 37 The pilot light burner is of novel construction and includes the hollow casing I1 having a botlpipe I9, thus providing a passageway for air into the casing to feed the combustion at the jet I8. A circular bore 25 concentric with the hole 24 provides a. shoulder 28 which supports an :annular baille plate 21 having an upturned ange 28 about its central opening. A circular bore 29 of larger diameter but concentric with the bore 25 provides an abutment 30 for the support of a perforate annular baffle plate 3l and having a downturned iiange 32. The plates 21 and 3I are so situated that the tip of the flame from the jet I8 will normally lie above the plate 21 but below the plate 3i. The "casing I1 includes in addition to the tubular arms 28, one or more radial sockets 33 adapted to receive an ignition or pilot tube 34, the details and functions of which will be'later explained. The novel construction of the burner is such that the flame from the jet I8l will be unaffected by currents of air, fuel gas or the products of combustion, since only Ia portion of the flame will be exposed to such currents, the major portion of it lying within the recess 23 in a most sheltered position.

The imperforate tube 34 communicating with the interior of the pilot burner housing I1 extends laterally toward the burner 8 and is connected with another imperforate tube 35 by a T-connection 38, to which is also connected the feed or booster pipe 31. Details of the connection 38 will'be later explained, but the arrangement is such that a combustion mixture introduced through the pipe 31 ows through the pipes 34- and 35 simultaneously, the flow through the pipe 34 bringing the combustible mixture into con-l tact with the iiame at the jet I8 causing combustion through the tubes 34 and 35, and causing the iiame to issue from the end ofthe tube 35 nearest the burner 8 to ignite gas issuing from the openings 9 in the burner 8.

Fuel gas is fed from, the manifold I through the pipe II when the valve. I2 is opened vto admit gas to the' burner 8, the gas for the pipe 31 passing from the pipe II through vthe T-connection' I3 and the reducer valve 38 and through the des vice 39 i'or mixing gas with air to produce a combustible mixture.

The reducer valve 38 has a seat 48 cooperating with an adjustable needle valve 4I whereby the opening through the valve may be properly ada justed.

The mixing device 39 includes' the tting 42 which has a Venturi nozzle 43 iitting inside the end of the pipe 31. Holes 44 extend` radially The, connection 3.8 between'the pipe 31 and the tubes/34 and 35 is such as to supply the tubes 34. and 35 with a combustible mixture of air and fuel gas so that those tubes may be lled and ignition l35 is thus secured adjacent to the openings l ings 83. l An opening 84 aoaasos extend from the pilot light to the far end of the tube 35 adjacent the burner 8, but the combusti-A ble mixture within the pipe 31 will not be ignited. The T-connection 38 according to its construction, as shown particularly in Fig. 2, includes a housing 41 having sockets to receive respectively the tubes 34 and 35, and the pipe 31. It also includes the tting 48 which has relatively small openings 49 directed toward .the tubes 84 and 38, respectively, and the opening 50 directed upward toward an opening 5I through the wall of the housing 41. Thus when a combustible mixture is furnished to the pipe 31, it escapes through the openings 49 into the tubes 34 and 35, and is ignited at the pilot jet I8.' The llame extends from the end of the tube 34 adjacent the pilot, toward the connection 38, aroundthe iitting. 48, and

through'the tube 35 to the burner 8. The size of y the holes 49 and 58 in the tting 48 are such as to prevent back-ring of the combustible mixture inthe pipe 31.

The -r-connection as is shown in modified for'm directed toward the tubes 34 and 3.5, respectively.

Segmentary collars 58 are provided to engage thel tubes 34 and 35, respectively. Open'spaces 51 are provided between the holes 55 andthe ends of the tubes 34 and 35. This construction is such that when a combustible mixture is fed through the pipe 31 it is directed into the tubes 34 and 35,

respectively, andignited by the pilot. 'I 'he flame extends through the tube 34, through the opening 51 adjacent the end of the tube 34, along the slot 53, downwardly through the opening 51 adjacent the end of the tube 35,- and through the tube 35 to the burner 8. Y

I'he connection between the end of the tube 38 and the burner 8, as shown in Figs. 1,- 2 and 5, includes a lug 58 cast integral with the burner 8 and having a slot 58 through which is `placed an ear onvthe tube 35. The tube 35 may thus be secured to the burner 8 by a pin 8| passing through the ear 80 on the tube 35 to engage the lug 58 on the burner 8. 'Ihe open end of the tube the bottom of the burner 8 and' in such position that the ame extending Vthrough the tube 3l' will ignite gas issuing from the holes 9 in the burner 8.

In the. alternate construction or a connection between the burner 8 and the tube 35, shown in Figs. 6 and '7, the tube 35 is supported by a collar 8i integral 4with and supported from the burner 8 by the weblaiing 82 which provides vertical openth'roush the wall of the burner 8 isadjacent to and directed toward the end of the tube 35. In this construction :llame issuing from the end o! thetube 35 is fed by a combustiblemixture issuing from the hole 84 and is directed downwardly through'4 the, opening v83 lso as to ignite gas issuing from the holes 8 in the burner 8.

It is obvious that parts of uns invenum may be used to advantage without including'the whole. and that various changes may be made in the details of construction within the scope oi' the appended claims without departing from the spirit of this invention.v

I claim:

1. In a device of the class described, the combination of a gas burner, a constantly burningv pilot light device, a pipe' for conducting gas to' said burner, a valve v controlling the passage oi' 88S accesos 3 into said pine, a conduit issuing from said pipe. a T-connection on the end of said conduit, an imv perforate flash tube leading from said connection.

to the pilot light device, an imperforate hash tube 5 leading from said connection to the burner, means forming restricted passageways between said connection and the tubes respectively for directing gas toward said burner and pilot light device, and

means forming a llame path about said connec- 10 tion.

2. In a device f the class describedf the combination of a gas burner, a constantlyI burning pilot light device, a pipe for conducting gas to said burner. a valve controlling the passage of gas l l into said pipe, a conduit leading from said pipe,

a T-eonnection on the end oi' said conduit, an

perforate nash tube leading from said connection to the pilot iight device, an imperforate cash .1

tube leading from said connection to the burner,

20 means forming restricted passagewaysbetween said connection and the tubes respectively for directing 88s toward said burner and pilot light device, and means forming a flame pathl about said connection including an opening to the 25 atmosphere through said connection, and'a restrictedpassageway between said connection and said opening.

,3; In a device of the class described, the combination of a gas burner, a constantly burning 30 pilot light device, a vpipe for conducting gas to said burner, a valve controlling the passage of gas into said pipe, a tubular ash tube device having a pair of tubes having adjacent ends in spaced relation, the remote end of one tube being in com; 35 munication with the flame of said pilot light device and the remote end of the other tube terminating adjacent said burner, a conduit for conducting gas fromsaid pipe under control of said valve toward said tubular flash tube device, a

o connection from said conduit having opposite- ,Qpenings directed toward said spaced tube ends for directing gas toward said burner and said pilot light device respectively, each of 'said openings being adapted to support a flame and a valve in said conduit regulating the amount of gas passing through said conduit. y

4. In a device of the kind described.- a-burner,

a primary ignition means spaced from said burner. a pair of ilash conduit means having ad- 50 jacent ends spaced from each other, the remote ends thereof respectively terminating adjacent said burner and said ignition 'means, and a device interposed between said conduit means, said device supplying fuel to said conduit means and 55 directing the same toward said burner and igniv pilot light device, a

tion means, a fuel supply for said burner, and means connecting said device into said fuel supply so as to receive fuel at all times when the ,burner is supplied with fuel, whereby ilame from the ignition means is flashed through one of the 5 conduit means to said interposed device, and ashed from said interposed device through the other of said conduit means to said burner, and whereby onlya small ignition flame is maintained by said interposed device.

5. In 'a device of the kind described, a burner,

a primary ignition means remote therefrom, conduit means connecting the burner with the ignition means and having spaced adjacent ends, a booster fuel device interposed between said spaced ends and having a jet directing fuel into said conduit means toward 'said ignition means and a second jet directing fuel into said conduit means toward said burner, and an intermediate jet adapted to convey a ame from said rstnamed jet' to said second-named jet.

6. In a device of the class described, the combination oi." a gas burner, a constantly burning supply conduit for conducting gas to said burner, a valve controlling the passage of gas into said supply conduit, a pair of hash tube devices, one of which has one end in communication with the name of said pilot light device and the other of which has one end terminating adjacent said burner, said flash tube devices having their remaining ends adjacent each other, and means/'connected to said conduit between said valve and burner for receiving gas from said conduit and directing the same between and in opposite directions into 35 both of said ash tube devices.

7. In a device of the class described, the com-v bination of a gas burner, a constantly burning pilot light device, a supply conduit for conducting gas to said burner, a valve controlling the passage of gas into said conduit, a pair of ilashl tube devices one of which has one end in communication with the llame ofsaid pilot light device and the other of which has one end terminating adjacent said burner, the remaining ends of said flash tube devices being adjacent each other, a burnerjet between said flash tube devices, means connectedl to said conduit between said valve and said burner, and communicating with said jet, for receiving gas from said conduit, said ,jet being arranged upon the opening of said valve to direct' gas from said last mentioned means in opposite directions into both said flash tube devices. 

